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02:05 Celebrate Princeton Innovation 2022 - Rodney… Celebrate Princeton Innovation 2022 - Rodney Priestley and Xiaohui Xu: Solar-driven system for water purification	Celebrate Princeton Innovation 2022 - Rodney Priestley and Xiaohui Xu: Solar-driven system for water purification A temperature-sensitive gel harnesses the sun to provide fast and inexpensive clean drinking water. water jail millions scales sun temperature power sponge device filtration approach access lack purification cost locations grid thing container poles From Innovation Innovation Communication 0 likes 55 plays